I honestly don't like this suggestion much. If you want a bunch of nonsense scripted forced rubbish, play EU (2012). (Yeah, I didn't care too much for that one).
That said, this could potentially be used to make the research tree a little more realistic. Perhaps the game would not unlock research topics until after the need for them has become apparent? Medi-kit not unlocked until you've taken at least 1 Fatal Wound, Laser Weapons not unlocked until after several missions using conventional arms, Laser Rifles not unlocked until after several kills with Laser Pistols [Based on field experience with the Laser Pistol, we've come up with this nifty new Rifle that doesn't miss all the time], etc. Armor and Crafts could also benefit from some 'pacing'.
I'm not saying this is a good idea, or that I would necessarily want to play that way.